Dogen's Philosophy of Shikantaza: Why Simply Sitting Becomes the Supreme Practice of Self-Mastery

The Principle of "Shusho Itto": Practice and Enlightenment Are Not Separate

The most revolutionary concept in Dogen's philosophy is "Shusho Itto" — the unity of practice (shu) and enlightenment (sho). This principle fundamentally overturns the conventional view that practice is a "means" to reach enlightenment.

In typical self-improvement frameworks, the current self is "incomplete," and the premise is that effort leads to a "state of completeness." But Dogen denied this very premise. Zazen is not a means to attain enlightenment — the act of sitting itself is already an expression of enlightenment. Completion already exists within practice. This represents liberation from the thought pattern that "my current self has no value, and value only emerges once I reach some future point."

This thought resonates with the Stoic philosopher Marcus Aurelius's principle in 'Meditations' that "virtuous action is itself the reward." For Aurelius, living rightly is itself the purpose, with no need to seek additional reward beyond it. Dogen's unity of practice and enlightenment similarly teaches that "sitting correctly is itself the purpose, with no need to seek a separate reward called enlightenment."

The practical transformation this principle brings is profound. When liberated from the dualism of means and ends, one can fully immerse in "the act of this very moment." Csikszentmihalyi's "flow state" — the optimal experience where action and consciousness merge and the sense of time disappears — bears striking similarity to the mental state described by Dogen's unity of practice and enlightenment. Flow research shows that when awareness of external rewards diminishes and one becomes absorbed in the intrinsic value of the activity itself, human performance reaches its highest level. Dogen had systematized this principle philosophically eight hundred years ago.

The Philosophy of "Shinjin Datsuraku": The Pinnacle of Self-Mastery Reached by Releasing the Self

The experience credited as Dogen's awakening at Mount Tendo in China under Master Nyojo is conveyed as "Shinjin Datsuraku" — the dropping away of body and mind. When Nyojo scolded a monk who had fallen asleep during practice, declaring "Zazen must be the dropping of body and mind," Dogen received these words with his entire being and reached profound awakening. This is the experience of complete liberation from ego attachment, the ultimate destination of self-mastery.

In Western philosophy, Descartes declared "I think, therefore I am," placing the thinking subject (ego) as philosophy's starting point. But Dogen saw that this very "thinking self" is the root of suffering and limitation. To discipline the self is not to strengthen the self but to release attachment to the self.

This paradoxical principle shares unexpected connections with Napoleon Hill's insights about the "power of the subconscious mind." Hill stated that excessive control by the conscious mind (ego) inhibits creative thinking, and that releasing the ego to entrust the subconscious activates the "sixth sense." Dogen's Shinjin Datsuraku similarly demonstrates the principle that loosening ego control allows wisdom beyond the individual to emerge.

Furthermore, Goleman's mindfulness research scientifically confirms that suppressing "self-referential thinking (the default mode network)" improves attention, judgment, and emotional regulation. A research team led by Dr. Sara Lazar at Harvard University analyzed the brains of sustained meditation practitioners using MRI and found that the prefrontal cortex and insula were significantly thicker compared to non-meditators. Dogen's Shikantaza was a practice that embodied this principle eight hundred years ago.

The Philosophy of "Nikon": Living Completely in This Present Moment Is the Essence of Self-Mastery

In the "Uji" fascicle of 'Shobogenzo,' Dogen discussed the inseparability of time and existence. In "Nikon" — this present moment — existence and time are one, and sending the mind to past or future means departing from existence itself. In "Uji," Dogen wrote "mountains are time, seas are time," presenting the remarkable insight that everything that exists is time itself.

This theory of time deeply resonates with Seneca's insight that "life is not short; we waste much of it." Just as Seneca taught "focus on the present," Dogen also taught that being completely present in "here and now" is the essence of self-mastery.

Yet Dogen's originality lies in arriving not at a teleological understanding of "concentrating on this moment" (for the sake of something) but at an ontological recognition that "this present moment is everything." It is not about focusing on "now" to increase productivity but about awakening to the fundamental fact that there is nowhere to exist except "now." This recognition transforms self-mastery from the ground up.

The modern psychologist Daniel Kahneman identified the divergence between the "experiencing self" and the "remembering self," but Dogen's philosophy of Nikon takes an even more radical position: the "experiencing self" is the only reality, and the evaluations and comparisons made by the "remembering self" are fictions.

The Practice of "Hishiryo": The Realm Opened by Thinking Beyond Thought

Another core concept that Dogen emphasized in Shikantaza is "Hishiryo" — non-thinking. In the "Zazengi" chapter of 'Shobogenzo,' Dogen recorded the essential point of zazen: "Think of the unthinkable. How do you think of the unthinkable? Non-thinking. This is the art of zazen."

Here, "thinking" (shiryo) refers to ordinary thought, "not-thinking" (fushiryo) refers to the absence of thought, and "non-thinking" (hishiryo) points to a dimension that transcends both thinking and not-thinking. This is not simply an instruction to "think nothing." When thoughts arise, one neither gets caught up in them nor forcibly suppresses them. One does not objectify thoughts but simply leaves them as they are. This attitude is the core technique of Shikantaza.

From a neuroscience perspective, ordinary thought is associated with activation of the prefrontal cortex and involves conscious control and planning. In a non-thinking state, however, the excessive activity of the prefrontal cortex quiets down and the brain begins to function more integratively as a whole. Research by Dr. Judson Brewer at Yale University confirmed that experienced meditators reduce activity in the default mode network — the network responsible for self-referential thinking — during meditation.

The practice of non-thinking offers a fundamental solution to the problem of "paralysis by analysis" in modern performance psychology. In sports psychology, it is well documented that when skilled athletes begin to consciously analyze their movements, their performance paradoxically declines. Dogen's Hishiryo provides a systematic practice for freeing oneself from this trap of overthinking.

"Being Confirmed by All Things": Beyond Self-Centered Discipline

In the "Genjokoan" fascicle of 'Shobogenzo,' Dogen wrote: "To study the Buddha Way is to study the self. To study the self is to forget the self. To forget the self is to be confirmed by all things." This final phrase — "to be confirmed by all things" (banpo ni shoseraruru) — points to the deepest dimension of self-mastery, where upon forgetting the self, all of existence illuminates the self.

In conventional self-improvement, the self is the "subject" of discipline and the world is the "object." But Dogen reverses this subject-object relationship. When the self is forgotten, the color of flowers, the sound of wind, the expressions of others — all things begin to speak to the self. It is not the self that recognizes the world, but the world that discloses the self. When this reversal occurs, self-mastery transcends individual endeavor and becomes a responsive relationship with the whole of existence.

This philosophy shares deep affinity with Martin Buber's thought of "I and Thou." Buber argued that when one shifts from treating the world as an object of utility (I-It) to entering genuine dialogical relationship (I-Thou), human existence is fundamentally transformed. Dogen's "being confirmed by all things" likewise describes not the use of the world as a "tool" for self-discipline, but a process in which the self opens within a primordial relationship with the world.

Modern systems theory and ecological psychology also understand the individual not as an isolated entity separate from the environment, but as a dynamic being continuously shaped through interaction with the environment. Dogen's philosophy of all things points to the limits of individualistic self-mastery and offers a perspective for repositioning the self within a broader context.

What Shikantaza Asks of the Modern World: The Paradox of "Purposeless Completion"

The most important question Dogen's philosophy poses to modern success philosophy is: "What are you disciplining yourself for?" If the answer is "for future success," then that effort is perpetually fleeing from "here and now."

Modern society is dominated by "instrumental rationality." Every action is performed "for the sake of" something, and its value is measured by results. But Dogen perceived that this instrumental rationality itself is the root cause of impoverishing human existence. The moment zazen is done "for the sake of" something, it ceases to be Shikantaza. Likewise, the moment self-mastery is pursued "for the sake of" something, it ceases to be self-mastery in the truest sense.

The sociologist Max Weber analyzed the essence of modern society as "the dominance of instrumental rationality" and called the process by which human action in every domain is reduced to means-ends relationships an "iron cage." Dogen's Shikantaza is precisely a practice for liberating oneself from this "iron cage." The act of simply sitting without purpose is, for modern people dominated by instrumental rationality, both the most difficult and the most liberating practice.

Dogen teaches that self-mastery is not an investment for the future but living this present moment with one's entire being — completion exists within the act itself. This paradox of "purposeless completion" is the ultimate realm of self-mastery pointed to by the philosophy of Shikantaza. Shusho Itto, Shinjin Datsuraku, Nikon, Hishiryo, being confirmed by all things — all these concepts illuminate the same truth from different angles. That truth is the deepest insight of human wisdom: it is precisely by transcending the self that one arrives at the true self.